The ADHD Foundation
The ADHD Foundation website has a resource page which has a wide range of information about ADHD in a number of different settings.
Neurohub
There is a support group based at Zink in Buxton, Neurohub. More information about what they offer can be found by visiting their website (link below):
Family Fund
The Family Fund have grants available (depending on the family income) which can support with a range of equipment and support. They also have a section on 'Wider Support' which has links to other organisations.